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Rich
Rich, Master Electrician
Category: Electrical
Satisfied Customers: 1801
Experience:  Over 35 years residential, commercial, industrial wiring, install, troubleshoot, service, maintain
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hello anybody there

This answer was rated:

hello anybody there

Rich :

yes . How can I help you ?

Customer:

somehow I have 3 different eletricain on at the same time

Rich :

do you have a situation or question I can help you with ?

Customer:

question

Rich :

do you have 3 different questions nopen ???

Customer:

same question 3 people replied.

Rich :

there was no querstion here ?

Customer:

ill close off the other 2. just a sec

Rich :

Ok

Customer:

I need to know the preferred method used to attach unistrut to cinder block wall. The lengths are 5 ft and I will be mounting at least 3 runs of 1 1/2 emt and at least 6 runs of 3/4 emt

Customer:

in California

Customer:

how far apart should the lengths be from each other ??

Rich :

this is the only pipe or stuff that the unistrut will be supporting

Customer:

yes.

Rich :

most times with hollow block walls , toggle bolts would be the best method of attachment

Customer:

are tapcons acceptable ?? not sure that the cells are hallow

Rich :

just so we are on the same page .. what are you calling tapons .. plastic anchors , lead anchors or metal sleves ??

Rich :

or metal anchors driven into the block

Customer:

mettle concrete anchors.

Customer:

the blue guys . used a lot in Ca

Rich :

I got that ones that are driven into the wall .. permanent anchors ?

Customer:

yes

Rich :

Ohh you mean the ones you screw into the concrete

Customer:

yep.

Rich :

OK .. if the se are truelly cinder blocks .. then I would be hesitant to use those for supporting these unistrut ... if not installed completely correct the first try they will spin out .. I would favor the use of toggle bolts

Rich :

reallistically .. the job requires a solid mounting method .. if tappons are what you are comfortable wiuth as a solid mounting method .. then go for it

Customer:

ok , I thing that 4 per run than ?? how far apart should the struts be from each other ?? I was thinking about 60 inches of so ?

Customer:

im a little rust y on this .

Rich :

give me a minute to look up the code

Customer:

ok

Rich :

Code says that the conduit neds to be supported at least every 10 feet

Rich :

and supported at 3 feet or less from a junction box or conduit body

Rich :

so uni can be 10 feet apart

Customer:

ok. sounds good. I thatugh that it may have changed. you have been very helpful.

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