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I've got two 240V electric wall heaters with adjustable

I've got two 240V electric wall heaters with adjustable wattage, on a single dedicated circuit with a 20A breaker. The heaters are controlled by mechanical line volt thermostats. I'd like to replace the thermostats with programmable ones. The programmable thermostat I'd like to buy is only rated for 16.7A.1) Do I need to change the breaker to 16.7A or less to protect the thermostats, or is it fine to keep the 20A breaker?2) If I can keep the 20A breaker: I have been told that the load on any circuit should not exceed 80% of the nominal capacity (e.g., 20A breaker means can't use more than 16A). Does that guideline apply to the thermostat rating also (e.g., 16.7A rating means can't use more than 13.4A)? If so, I would have to configure my heaters for a lower wattage. (I would have to do that anyway if I were to put in a lower rated breaker, but I would rather not go to the trouble and expense of replacing the breaker if it is safe enough to avoid doing so.)

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Kevin

Supervising Electrician

Diploma

4,794 satisfied customers
This from Yeadon Pa. I have a floor model warmer this is the

hello this tony from Yeadon Pa. I have a floor model warmer this is the model#wshb1 1-5 ser#19010 A series it has 5 opening but when I hook it up only the first 2 thermostat light it has 2 white wires 2 blacks/and 2 reds can you tell me how to hook it up I put the 2whites together and the blacks and two reds hook them 120v to red and 120v to the blacks and white to ground. can you tell how to wire it the right way.JA: Have you talked to a construction professional about the floor?Customer: it a food warmerJA: Do you plan on doing the work yourself?Customer: yes I do electric work but this has no schematicJA: Anything else we should know to help you best?Customer: no I just won't to know to hook it up!

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Chris Parson

Electrician

34 satisfied customers
The diagrams and test booklet are in this link. 1. A(n)

the diagrams and test booklet are in this link. https://drive.google.com/open?id=0B0E1bs5IMinAdlRIdEdBcFdDQkk1. A(n) _______ circuit exists when a conductor or conductive material of low resistance connects across the conductors in a circuit somewhere between the source and the load.A. openB. closedC. groundD. shortFigure A1—Use this figure to answer Question 2.2. Look at Figure A1. What happens when the switch in the circuit is closed?A. Only Lamp 1 runs.B. Both lamps light.C. Only Lamp 2 lights.D. Nothing happens.Figure A2—Use this figure to answer Question 3.3. What type of drawing is shown in Figure A2?A. Block diagramB. Device drawingC. Panel diagramD. Wiring diagramFigure A3—Use this figure to answer Question 4.4. The symbol shown in Figure A3 is placed near the supply terminals of a schematic diagram. This shows that supply current isA. direct.B. alternating.C. rectified.D. pulsating.5. Which one of the following symbols represent a device used to provide protection from high-voltage surges caused by lightning?A.B.C.D.6. A device is normally energized if the schematic diagram shows that the device isA. positioned near the source of power.B. connected in series with another device.C. connected directly to a closed switch.D. a part of a closed circuit connected to the power source.7. Which symbol is used to represent a thermostat contact for a heating system?A.B.C.D.8. Which symbol represents a circuit breaker with thermal overload protection?A.B.C.D.9. What type of diagrams are used to present the conditions that are available to control outputs based on inputs?A. BlockB. SchematicC. PanelD. LadderFigure A7—Use this figure to answer Questions 10–14.10. What type of diagram is shown in Figure A7?A. Block diagramB. Wiring diagramC. Three-line schematic diagramD. Single-line ladder diagram11. If power is being supplied to the circuit from Line 1, what's the first open-circuit condition encountered in Figure A7?A. AB. BC. CD. F12. How many normally open auxiliary relay contacts are shown in the schematic diagram in Figure A7?A. 0B. 1C. 2D. 313. In Figure A7, what happens when push button C is pressed down?A. B opens, the coil energizes, and a path is complete to 2.B. D closes, the auxiliary contact C1 closes, and the overload contact opens.C. The coil (C1) energizes, the auxiliary contact (C1) closes, and a path is complete to 2.D. Nothing (Both C and E need to be pressed to close the circuit.)14. What type of component is labeled A in Figure A7?A. Auxiliary contactB. Oil-type breakerC. NC pressure switchD. Normally closed breaker15. Which of the following use standard symbols to represent electrical components included in a circuit or system to show the scheme or plan of the circuit?A. Electrical schematic diagramsB. LegendsC. Block diagramsD. Location plan drawings16. Which one of the following devices will open the circuit at a definite amount of overload current?A.B.C.D.Figure A9—Use this figure to answer Questions 17–20.17. Which letter identifies the device used to supply power to the circuit in Figure A9?A. AB. BC. CD. H18. How many fan motors are operating given the conditions shown in Figure A9?A. 1B. 2C. 3D. 419. In Figure A9, if A opens how many fans would be operating in the circuit?A. 0B. 2C. 3D. 420. Which of the following will cause component A in Figure A9 to open?A. Increase in pressureB. Decrease in pressureC. Increase in temperatureD. Decrease in temperature

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Sam Irvin

Electrical Systems Journeyman

114 satisfied customers
I had a mini split unit installed in my storage building at

I had a mini split unit installed in my storage building at my residence. my regular electric***** *****ves in Georgia , I live in Louisiana. after getting the work done by a local electrician he says the work is wrong and I am overcharged. please help ?JA: Did you double-check the thermostat? And what about the unit's filters?Customer: mini split unit no thermostatJA: Do you plan on doing the work yourself?Customer: the work has been completed. the local electrician used orange coated 10-3 wire a double pole 30 amp breaker at my house breaker box to a double pole 30 amp in a disconnect in my building the unit is fed with a double pole 15 amp breaker in that ox with 12- 2 wire and my lights and fan are fed with a single pole 20 amp breaker. is this correct ? the unit requires 15 ampsJA: Anything else we should know to help you best?Customer: the unit is rated for 208-230 v- 60 hz

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Kevin

Supervising Electrician

Diploma

4,794 satisfied customers
I am a renter and just found out that the hot water heater

Hello. I am a renter and just found out that the hot water heater in my home was 220 wired to 110. I would always run out of hot water before the bathtub was full. It has since been fixed. I'm trying to find out if this would have made any difference in my electric bill. Some say yes, some say no. I'm thinking that while it wouldn't be pulling as much electricity, it would be pulling it for much longer on 110 than 220. However, I realize I could be dead wrong since I know absolutely nothing about electricity! So, can anyone say how much more or how much less electricity it would take to heat the water and keep it at a constant temp using 110 vs 220? Would it affect my bill negatively or positively?? Thanks.

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ProGrade

Electrical Contractor

1,096 satisfied customers
Adding a 15x15 room to house but room is 60 feet from main

Hi...adding a 15x15 room to house but room is 60 feet from main breaker box. Trying to decide if I need 6/3 or 4/3 wire. Only thing in room will be a heater (12.5 amps) a small 120V a/c plus one light and 4 interior outlets and 1 exterior. I don' t want to push the 6/3 so if I need 4/3 that is OK...just want to be sure.JA: I'll do all I can to help. How long have you been dealing with this?Customer: not long at all...room will be done "dried in" this week so I'll be ready to install electrical this weekend.JA: How old is the system in question? And have you consulted an electrician yet?Customer: house is from 70s...all copper (no aluminum). Yes I have an electrician at work that I've consulted with.JA: Do you plan on doing the work yourself?Customer: I'd like to yes - as it's a very simple system.JA: Anything else we should know to help you best?Customer: I think I've covered the bases.

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George Smith

Vocational, Technical or Trade School

314 satisfied customers
On the eco 110 can i tie the wires that came with the unit

On the eco 110 can i tie the wires that came with the unit in to the wires coming into my house from my 60 amp breakerJA: Did you double-check the thermostat? And what about the unit's filters?Customer: Will it work with a double post 30amp breakerJA: Do you plan on doing the work yourself?Customer: YesJA: Anything else we should know to help you best?Customer: Will it work wired into a double post 30 amp breaker

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ProGrade

Electrical Contractor

1,096 satisfied customers
I'm replacing the thermostat for a radiant ceiling heater in

I'm replacing the thermostat for a radiant ceiling heater in my living room; this is a 240v system connected to a double-pole 20 amp breaker. However I am looking to buy a new thermostat I'm confused in how the thermostat's specifications are detailed. Do I need one that is rated 240v at 20amps or 240v at 40 amps?

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Kevin

Supervising Electrician

Diploma

4,794 satisfied customers
Solaia Boiler isn't firing. It has power and oil. thermostat

solaia Boiler isn't firing. It has power and oil. thermostat is powered and set on heat to hold 70 and temp shows 65?

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Rico Soma

Supervisor

27,776 satisfied customers
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