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200A panel but 100A service

CEC
18K views 23 replies 9 participants last post by  tmessner  
#1 ·
This is a weird situation. I have a client that really needs a panel upgrade. Their fuse panel is very much deteriorated.

I booked the replacement but I know they will be getting an electric vehicle in the future and possibly a hot tub.
It will be much easier to upgrade the existing service conduit in the spring because the meter base is being blocked by a fence and really high/full cedar hedges which are going to be removed come spring.
Instead of installing a 100 amp panel and replacing it later, I'd like to install a 200 amp panel and feed with with e existing #3 wires.
The 1-1/4" conduit will be fed from the back of the tub but after upgrading the service the tub will be fed from the top so it will not have to be removed.
Is this acceptable if I label the breaker at 100 amps max?
 
#2 · (Edited)
I cant speak for CEC codes but this what I will suggest to buy a 100 amp two pole breaker with tiedown bracket that is the only legit way it can meet the codes and you can use the 200 amp panel with 100 amp main breaker it add on. when you do the upgrading the rest in spring time you can keep that 100 amp breaker for something else or keep it to yourself.,,

I am sure the CEC do allow that so just hang on either Eddy or couple other guys will make a posting on that.

I have done that quite few time so my inspectors did not have issue with that.
 
#3 ·
I would do like French said and backfeed a 100A breaker. But that is not going to be legal in Canada due to the separate service enclosure thing.

Get the customer to give you a deposit on the future service upgrade and don't get it inspected until then. Do this as an emergency repair with the understanding that you will upgrade the service in the Spring. This way you ensure that they have you back to upgrade the whole service and make it compliant.
 
#19 · (Edited)
I think I read somewhere on here once that we can install a 200 amp panel with 1-1/4" conduit by reducing the neutral. Something about it being common practice if the main conduit is really difficult to replace like for a town house where the conduit is under the garage floor slab.
Is this true?


Did some math:
Table 9C - PVC 1-1/4" = 317mm2 @ 40%


Table 10A - R90 2/0 = 141.9mm x 2 = 283.8mm2
R90 #6 = 37.98 mm2

Total 321.78mm2
 
#20 ·