bcl
Member
- Location
- Garden Ridge, TX
- Occupation
- Electrician (Owner/ Operator)
Many SPD on the market are Type I/ Type II. Up until this point, when installing a new surge protector on an older main residential panel without a main breaker, I've either done a line side connection, or created space by adding a sub-panel (if the homeowner isn't ready for a service change). Since Type I devices don't need overcurrent protection, what's the problem with just tapping into an existing circuit using Alumiconns, near the breaker? Some breakers allow for two wires (Square D QO and HOM), but only if both wires are copper, hence the Alumiconns (most SPDs have CU/AL). It might be that the manufacturers requires a dedicated breaker if installed as Type II device, but I'm curious what you guys think about this installation. It seems to comply with the following:
242.14 Type 2 SPDs.
If a Type 2 SPD is installed, it shall be installed in accordance with 242.14(A), 242.14(B), or 242.14(C).
(A) Service-Supplied Building or Structure.
Type 2 SPDs shall be connected anywhere on the load side of a service disconnect OCPD required in 230.91 unless installed in accordance with 230.82(11).
(B) Feeder-Supplied Building or Structure.
Type 2 SPDs shall be connected at the building or structure anywhere on the load side of the first OCPD at the building or structure.
242.14 Type 2 SPDs.
If a Type 2 SPD is installed, it shall be installed in accordance with 242.14(A), 242.14(B), or 242.14(C).
(A) Service-Supplied Building or Structure.
Type 2 SPDs shall be connected anywhere on the load side of a service disconnect OCPD required in 230.91 unless installed in accordance with 230.82(11).
(B) Feeder-Supplied Building or Structure.
Type 2 SPDs shall be connected at the building or structure anywhere on the load side of the first OCPD at the building or structure.