Page 23 - puget sound energy community energy programs

Chapter 1

Figure 5 Minimum clearances from oil-filled equipment to LP, hazardous liquid, or fuel tanks

6'
MIN OIL-FILLED
ELECTRICAL
20' EQUIPMENT
MIN (PAD OR POLE
MOUNTED)
LP TANK

LP TANK
OIL-FILLED
ELECTRICAL
EQUIPMENT
(PAD OR POLE
MOUNTED)
10'
MIN
DIKE OF ADEQUATE HEIGHT TO
CONTAIN OIL AND NOT ALLOW IT
TO FLOW TOWARDS THE LP TANK
TOP VIEW

Liquefied propane tanks: clearances from ignition source

If there are liquefied propane (LP), hazardous liquid, or fuel tanks on your property, the
following minimum clearances apply from PSE’s padmounted transformer or the ignition
source (see Figures 5 and 6).
• All LP tanks must be at least 6 feet from a vertical plane extending down from an
overhead primary voltage line.
• Consumer storage LP tanks must be at least 5 feet from any source of ignition,
such as electric meter bases, submersible transformers, secondary handholes or
pedestals, or padmount switches.
• The fill connection, gauge connection, or vent on the LP tank must be at least
10 feet from any source of ignition.
Figure 6 Minimum clearances from LP storage tanks to sources of ignition

PRIMARY VOLTAGE
POWER LINE

ELECTRIC METER
BASE OR SWITCH
GAUGE, VENT, OR
FILL CONNECTIONS

6' MIN 10' MIN
5' MIN
5' MIN
LP GAS

SUBMERSIBLE TRANSFORMER, HANDHOLE, SWITCH, OR PEDESTAL

Electric Service Handbook 2017 — Single-Family Residential Projects 14