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John Galt
Forward, March
Premium
join:2004-09-30
Happy Camp
kudos:8
reply to tp0d

Re: sparkys- is it legal?

Short answer is 'yes'.

You'd have to use a 60A disconnect with fusing to 15A, or, if you use a 30A disconnect, replace the upstream CB to no more than 30A.



tp0d
yabbazooie
Premium
join:2001-02-13
Carnegie, PA
kudos:5

Ok so if I get a 60a rated disconnect with 15a fuses, its legal? Or mebe for temporary till the owners can get an electrician in there

Tnx

-j
--
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currently on FiOS (kick aZZ!)



alkizmo

join:2007-06-25
Pierrefonds, QC
kudos:1
reply to John Galt

said by John Galt:

You'd have to use a 60A disconnect with fusing to 15A, or, if you use a 30A disconnect, replace the upstream CB to no more than 30A.

Curiosity: Why a 60A disconnect? The upstream CB protects the wire that goes to the disconnect, that wire is of proper gauge (If at 40A or lower). Anything connected downstream of the disconnect is protected by the 15A fuses.


John Galt
Forward, March
Premium
join:2004-09-30
Happy Camp
kudos:8

You forgot protection for the disconnect...

Disconnects are rated for 30A or 60A...so those are the choices. You cannot put a 30A disconnect on a circuit protected at more than 30 amps.



leibold
Premium,MVM
join:2002-07-09
Sunnyvale, CA
kudos:10
Reviews:
·SONIC.NET
reply to alkizmo

said by alkizmo:

Curiosity: Why a 60A disconnect?

While a fused 40A disconnect may exist as a specialty part, the next larger common rating is 60A (which will be easier to get).
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Msradell
P.E.
Premium
join:2008-12-25
Louisville, KY
reply to tp0d

said by tp0d:

Ok so if I get a 60a rated disconnect with 15a fuses, its legal? Or mebe for temporary till the owners can get an electrician in there
Tnx
-j

It's actually legal to leave it that way permanently if the owner wants as long as he doesn't need this circuit for something else.