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I would like to seek for advice on whether a sub panel

Hello,I would like to seek for advice on whether a sub panel controlling my AC unit might actually 'exist' and is somewhere in my house. Our house is 2-story, built in 2003, and we have 2 AC units, one for each floor. The AC unit powered our upstair living quarter failed for the first time with this particular symptom - ~ 0.28V measured hot-to-hot from the power supply lines to the disconnect box ,w/ a 60A dual pole breaker, for this AC unit. I've been puzzling as to where the electrical power source to my 2 AC units are located, especially the one that failed. Our main control panel is nearly full (3 slots available) and none is labeled 'AC'. The only HVAC related items in the main panel are the 2x 20A breakers, each is label 'furnace' for the 2 furnace units in the attic. I verified every each one breaker in the main panel and none is for my 2 AC units. Is there a good chance that I have a sub panel somewhere in my house controlling the 2 AC units outside? If it is, where should I look for them?Thanks.Tin

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George Smith

Vocational, Technical or Trade School

452 satisfied customers
How many travel trailers (RV Park) can I hook to my main

How many travel trailers (RV Park) can I hook to my main 200amp breaker box. I think I need to install a 30/50 receptacle for each trailer ?JA: I'll do all I can to help. How long have you been dealing with this?Customer: just planning to setup the RV parkJA: Do you plan on doing the work yourself?Customer: probablyJA: Anything else we should know to help you best?Customer: I plan on having 8 trailers spaced 12ft apart, how many feet of wire and type do I need ?

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Mike G.

Master Electrician

Vocational, Technical or Trade Scho

10,604 satisfied customers
My question is if a 45kva transformer is capable of handle

Hi my question is if a 45kva transformer is capable of handle two 200 amp panelsJA: I'll do all I can to help. How long have you been dealing with this?Customer: just a few minutesJA: Do you plan on doing the work yourself?Customer: no we will hire a license contractorJA: Anything else we should know to help you best?Customer: no

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Kevin

Supervising Electrician

Diploma

4,900 satisfied customers
Can I run (10) 50amp RV site boxes on one circuit of 2/0 2/0

Can I run (10) 50amp RV site boxes on one circuit of 2/0 2/0 2/0 2/0 wire or would I need to have individual home runs to each site?

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Mike G.

Master Electrician

Vocational, Technical or Trade Scho

10,604 satisfied customers
240v line in from breaker to double timers - #1 to pump

240v line in from breaker to double timers - #1 to pump motor(240) - #2 timer to booster/240v or 120v motor/ 120 v chlorinator to run when pump switch is on/ single throw on/off for pump motor and single throw 120 for booster on/off What would be the wiring diagram (colored preferred) from supply to completed connections?JA: How old is the system in question? And have you consulted an electrician yet?Customer: pump motor and booster motor new yesterday; unfortunately for me, I didn't mark connections before I disconnected the existing wiring-- which worked well except both motors died.JA: Do you plan on doing the work yourself?Customer: yes, ready to go Have all necessary equipment, just need diagramJA: Anything else we should know to help you best?Customer: that'll do it

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George Smith

Vocational, Technical or Trade School

452 satisfied customers
I just purchased a new lamppost light and the fixture has 3

HI. I just purchased a new lamppost light and the fixture has 3 white 3 black and a ground. the feed coming from my electrical panel has 1 black 1 white and one ground. Do I just tie off the 2 extra white/black and just connect one of the white/black to the wires from the electrical panel?

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ProGrade

Electrical Contractor

1,134 satisfied customers
I am in the process of running underground services to a new

I am in the process of running underground services to a new 2 car +shop garage.For the electrical i ran 2" sch 40 PVC conduit.I am planning to install a 100amp panel which will be fed from the existing main house panel. The question is,what wire to run?Do I consider the garage panel a subpanel,with no main breaker,no additional grounding(3 rods),etc. -----At present I would use 2-2-2-4 or,2-2-4-6 ,aluminum. Largest load is a welding mach.(50 A),hand tools,lights,door openers.---What say you? Thank you, Bill

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Mike G.

Master Electrician

Vocational, Technical or Trade Scho

10,604 satisfied customers
I just bought an AC welder and it did not have the

I just bought an AC welder and it did not have the electrical plug. The power cord has three wires -- blue, brown, green. I am thinking the green is the ground. Does it matter which of the two remaining wires I connect to which side of the outlet plug in? If the unit was 220V instead of 110V it would have a 4th wire, is that correct?

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Mike G.

Master Electrician

Vocational, Technical or Trade Scho

10,604 satisfied customers
Trying to figure out a way to add install a 4 wire spa to a

Trying to figure out a way to add install a 4 wire spa to a three wire panelJA: I'll do all I can to help. How long have you been dealing with this?Customer: just nowJA: Do you plan on doing the work yourself?Customer: yesJA: Anything else we should know to help you best?Customer: just that it seems that I would need to run a separate wire from main panel to spa box but it needs to be right

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Mike G.

Master Electrician

Vocational, Technical or Trade Scho

10,604 satisfied customers
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