Page 22 - Puret Sound Energy Hand Book 1218

Chapter 1

Figure 4 Clearances for transformers from structures

COMBUSTIBLE BUILDING WALLS AND ROOF 10' COMBUSTIBLE BUILDING WALLS AND ROOF
10' 3'

10'

APPROVED APPROVED
TRANSFORMER TRANSFORMER
AREA AREA

10' 3'

TRANSFORMER CLEARANCES FROM COMBUSTIBLE SURFACES REDUCED FLAMMABILITY TRANSFORMER CLEARANCES
FROM COMBUSTIBLE SURFACES

NONCOMBUSTIBLE COMBUSTIBLE
ROOF AND ROOF AND
SOFFIT SOFFIT

3' 10'
NONCOMBUSTIBLE BUILDING WALLS 10' NONCOMBUSTIBLE BUILDING WALLS
3'

APPROVED
TRANSFORMER
AREA APPROVED
TRANSFORMER
3' AREA 3'

TRANSFORMER CLEARANCES FROM TRANSFORMER CLEARANCES FROM
NONCOMBUSTIBLE SURFACES NONCOMBUSTIBLE WALLS WITH COMBUSTIBLE ROOFING

Electric Service Handbook 2017 — Single-Family Residential Projects 13